Alumina powder
Application Industry: Refractory Raw Materials, Structural Ceramics, Electronic Equipment, Abrasive Materials, and Polishing Materials
Application Equipment: High Alumina Refractory Castable, Plastic, Repair Mix, Gunning Mix, Coating Mix, Binder, Refractory Fiber, and Polishing Slurry
Size: Custom alumina powder particle size from 80 mesh to 5000 mesh per ceramic manufacturing or refractory raw material requirement (free engineering on request)
Products Overview
Our Alumina powder is a high-performance ceramic and refractory raw material engineered for shaped products and unshaped refractory materials, structural ceramics, electronic equipment, abrasive materials, and polishing materials. Manufactured by Zhengzhou caihua from industrial aluminum hydroxide or industrial alumina by calcination at an appropriate temperature into an alpha-alumina product with a stable crystal form, alumina micropowder is made from calcined alpha-alumina as the raw material through ball milling. The product family possesses a high melting point, high mechanical strength, hardness, high electrical resistivity, and thermal conductivity, making it suitable for industries such as electronic equipment, structural ceramics, refractory materials, abrasive materials, and polishing materials.
Alumina polishing powder is an alpha-Al2O3 powder calcined at high temperatures, additionally containing auxiliary ingredients such as dispersants, suspending agents, lubricants, and emulsifiers. It is applied in industries involving thermal conduction, polishing, electroplating, and catalysis. The product family has four engineering-proven chemistry grades covering Al2O3 content 99.0%-99.7%, Na2O content 0.10%-0.20%, SiO2 content 0.05%-0.15%, Fe2O3 content 0.03%-0.04%, True Specific Gravity 3.93-3.95 g/cm3, alpha-Al2O3 content 94%-95%, and Primary Crystal Size 1-4 micrometer depending on grade.
Per customer-provided data, the product family serves multiple application scenarios including shaped products and unshaped refractory materials such as refractory castables, plastics, repair mixes, gunning mixes, coating mixes, binders, and high-purity refractory fibers. The product family also serves machinery preparation, optical processing, the tableware industry, jewelry processing, auto parts repair and maintenance, optical lenses, machine electrical accessories, and other industries requiring surface treatment, polishing, and grinding. The product family is also used in the manufacture of dental cement, porcelain, special ceramics, electronic ceramics, paint fillers, mordants, and metallic aluminum. Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each Alumina powder grade is engineered to ASTM, GB/T, and ISO ceramic and refractory raw material standards.
Product Features
Features:
- Manufactured by Zhengzhou caihua as high temperature calcined alumina powder uses industrial aluminum hydroxide or industrial alumina as raw material, calcined at an appropriate temperature into an alpha-alumina product with a stable crystal form
- Engineering-proven characterized with high melting point, high mechanical strength, hardness, high electrical resistivity, and thermal conductivity
- Multi-grade chemistry series NX-1, NX-2, NX-3, HX-1 covering Al2O3 content 99.0%-99.7% and True Specific Gravity 3.93-3.95 g/cm3
- 14 standard particle size options from 80 mesh to 5000 mesh for matching different ceramic manufacturing, refractory manufacturing, and polishing application requirements
- Packaging options include 25KG woven bag and ton bag packaging for safe international shipment
Product Specification
Alumina powder is engineered per buyer’s ceramic manufacturing or refractory raw material requirement. Custom chemistry and grade available on request.
| Items | NX-1 | NX-2 | NX-3 | HX-1 |
|---|---|---|---|---|
| Al2O3 content ≥ (%) | 99.7 | 99.5 | 99.0 | 99.5 |
| Na2O content ≤ (%) | 0.10 | 0.15 | 0.20 | 0.20 |
| SiO2 content ≤ (%) | 0.05 | 0.10 | 0.15 | 0.08 |
| Fe2O3 content ≤ (%) | 0.03 | 0.03 | 0.04 | 0.03 |
| True Specific Gravity (g/cm3) ≥ | 3.95 | 3.94 | 3.93 | 3.93 |
| α-Al2O3 content ≥ (%) | 95 | 95 | 94 | 94 |
| Primary Crystal Size (micrometer) | 1-3 | 2-4 | 2-3 | 1-2 |
Note: Alumina powder is engineered per customer-provided chemistry data covering 4 grades NX-1, NX-2, NX-3, and HX-1. Common particle size options include 80 mesh, 120 mesh, 180 mesh, 200 mesh, 325 mesh, 400 mesh, 600 mesh, 800 mesh, 1000 mesh, 1500 mesh, 2000 mesh, 3000 mesh, 4000 mesh, and 5000 mesh per customer-provided data. Packaging specifications include 25KG woven bag packaging and ton bag packaging per customer-provided data. Custom chemistry, grade, and particle size available on request.
Product Applications
Alumina powder is a high-performance ceramic and refractory raw material engineered for shaped products and unshaped refractory materials, structural ceramics, electronic equipment, abrasive materials, and polishing materials. Per customer-provided data, alumina powder is suitable for shaped products and unshaped refractory materials such as refractory castables, plastics, repair mixes, gunning mixes, coating mixes, binders, and high-purity refractory fibers. It has a good effect on improving the high-temperature strength and corrosion resistance of refractory materials.
Application Industry: Refractory Raw Materials, Structural Ceramics, Electronic Equipment, Abrasive Materials, and Polishing Materials.
Target Equipment: High Alumina Refractory Castable, Plastic, Repair Mix, Gunning Mix, Coating Mix, Binder, Refractory Fiber, Machinery Preparation, Optical Processing, Tableware Industry, Jewelry Processing, Auto Parts Repair and Maintenance, Optical Lenses, Machine Electrical Accessories, and Surface Treatment, Polishing, and Grinding Equipment of small, medium-size, and large ceramic manufacturing and refractory raw material operations across the global ceramic raw material value chain.
Specific Application Zones: The NX-1 grade is engineered for high-purity industrial application with Al2O3 content minimum 99.7%, Na2O content up to 0.10%, SiO2 content up to 0.05%, Fe2O3 content up to 0.03%, True Specific Gravity minimum 3.95 g/cm3, alpha-Al2O3 content minimum 95%, and Primary Crystal Size 1-3 micrometer. The NX-2 grade is engineered for high-purity industrial application with Al2O3 content minimum 99.5%, Na2O content up to 0.15%, SiO2 content up to 0.10%, Fe2O3 content up to 0.03%, True Specific Gravity minimum 3.94 g/cm3, alpha-Al2O3 content minimum 95%, and Primary Crystal Size 2-4 micrometer. The NX-3 grade is engineered for general industrial application with Al2O3 content minimum 99.0%, Na2O content up to 0.20%, SiO2 content up to 0.15%, Fe2O3 content up to 0.04%, True Specific Gravity minimum 3.93 g/cm3, alpha-Al2O3 content minimum 94%, and Primary Crystal Size 2-3 micrometer. The HX-1 grade is engineered for general industrial application with Al2O3 content minimum 99.5%, Na2O content up to 0.20%, SiO2 content up to 0.08%, Fe2O3 content up to 0.03%, True Specific Gravity minimum 3.93 g/cm3, alpha-Al2O3 content minimum 94%, and Primary Crystal Size 1-2 micrometer. All four grades serve multiple application scenarios including the manufacture of dental cement, porcelain, special ceramics, electronic ceramics, paint fillers, mordants, and metallic aluminum, with stable quality and good engineering performance across the global ceramic raw material value chain.
CH Refractories is an Alumina powder manufacturer in China, Henan, Zhengzhou. The complete Alumina powder product family is manufactured in our Xinmi City, Zhengzhou, Henan, China facility to ASTM, GB/T, and ISO ceramic and refractory raw material standards. Each batch is supported by free consultation, on-site technical support, and a dedicated engineering team serving Refractory Raw Materials customers across the global ceramic raw material value chain.
